/*
 * "Ink & Brass", the app's own look: graphite, warm off-white text, one brass accent.
 * Figures are set in Geist Mono with tabular digits, like a printed receipt.
 * Layout: one narrow reading column; the home page opens with a receipt beside the pitch.
 * Fonts are served from this site, so pages make no third-party requests.
 */

@font-face { font-family: "Geist"; src: url("fonts/geist_regular.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Geist"; src: url("fonts/geist_medium.ttf") format("truetype"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Geist"; src: url("fonts/geist_semibold.ttf") format("truetype"); font-weight: 600 700; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("fonts/geist_mono_regular.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("fonts/geist_mono_medium.ttf") format("truetype"); font-weight: 500 600; font-display: swap; }

:root {
  /* Dark first, like the app. */
  --bg: #0E1012;
  --panel: #16191C;
  --raised: #1D2125;
  --line: #2A3035;
  --text: #F2EFE8;
  --muted: #A3A8AC;
  --brass: #CFAE72;
  --brass-ink: #1A1406;
  --ok: #8FD3B4;
  --paper: #F4EFE3;
  --paper-ink: #22201B;
  --paper-faint: #8C8572;

  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --step-0: 1rem;
  --step-1: 1.125rem;
  --step-2: 1.375rem;
  --step-3: clamp(1.75rem, 1.3rem + 2vw, 2.5rem);
  --step-4: clamp(2.25rem, 1.4rem + 4vw, 3.75rem);
  --measure: 66ch;
  --wide: 72rem;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #F6F3EC; --panel: #FFFFFF; --raised: #F1EDE4; --line: #DDD6C8;
    --text: #1A1C1E; --muted: #5B5F62; --brass: #8A6420; --brass-ink: #FFFFFF; --ok: #1F7A58;
    --paper: #FFFFFF; --paper-ink: #22201B; --paper-faint: #8C8572;
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #F6F3EC; --panel: #FFFFFF; --raised: #F1EDE4; --line: #DDD6C8;
  --text: #1A1C1E; --muted: #5B5F62; --brass: #8A6420; --brass-ink: #FFFFFF; --ok: #1F7A58;
  --paper: #FFFFFF; --paper-ink: #22201B; --paper-faint: #8C8572;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 var(--step-0)/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--brass); text-underline-offset: 0.2em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { text-wrap: balance; line-height: 1.15; letter-spacing: -0.02em; font-weight: 600; margin: 0; }
p { margin: 0; }

.wrap {
  width: 100%;
  max-width: var(--wide);
  margin-inline: auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.wrap.narrow { max-width: calc(var(--measure) + 40px); }

.overline {
  font: 500 0.75rem/1 var(--sans);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.mono { font-family: var(--mono); font-feature-settings: "tnum"; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 600; font-size: var(--step-1); letter-spacing: -0.01em; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.nav { display: flex; gap: 20px; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px; border-radius: 12px;
  font: 600 0.98rem/1.2 var(--sans); text-decoration: none;
  border: 1px solid transparent;
}
.btn-primary { background: var(--brass); color: var(--brass-ink); }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { border-color: var(--line); color: var(--text); }
.btn-ghost:hover { background: var(--raised); }
.btn svg { width: 20px; height: 20px; }

/* Hero */
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: clamp(32px, 6vw, 88px); align-items: center; padding-block: clamp(48px, 8vw, 104px) clamp(48px, 7vw, 88px); }
.hero h1 { font-size: var(--step-4); letter-spacing: -0.035em; }
.hero h1 em { font-style: normal; color: var(--brass); }
.hero .lede { margin-top: 20px; max-width: 34rem; font-size: var(--step-1); color: var(--muted); }
.hero .actions { margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero .fine { margin-top: 16px; font-size: 0.875rem; color: var(--muted); }

/* The receipt: paper with a torn bottom edge, each read field ticked. */
.receipt-stage { display: flex; justify-content: center; }
.receipt {
  width: min(100%, 320px);
  background: var(--paper);
  color: var(--paper-ink);
  font-family: var(--mono);
  font-feature-settings: "tnum";
  font-size: 0.86rem;
  line-height: 1.5;
  padding: 26px 24px 40px;
  transform: rotate(-2deg);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(0, 0, 0, 0.06);
  --tooth: 10px;
  -webkit-mask: conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(var(--tooth) * 2) var(--tooth) repeat-x, linear-gradient(#000 0 0) top / 100% calc(100% - var(--tooth) + 1px) no-repeat;
          mask: conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(var(--tooth) * 2) var(--tooth) repeat-x, linear-gradient(#000 0 0) top / 100% calc(100% - var(--tooth) + 1px) no-repeat;
}
.receipt .shop { text-align: center; font-weight: 600; letter-spacing: 0.08em; }
.receipt .addr { text-align: center; color: var(--paper-faint); font-size: 0.78rem; }
.receipt hr { border: 0; border-top: 1px dashed var(--paper-faint); margin: 12px 0; }
.receipt .row { display: flex; justify-content: space-between; gap: 12px; }
.receipt .row span:last-child { text-align: right; }
.receipt .total { font-weight: 600; font-size: 1rem; }
.receipt .read { position: relative; }
.receipt .read::after {
  content: "✓"; position: absolute; right: -20px; top: 0;
  width: 16px; height: 16px; border-radius: 50%;
  background: #1F7A58; color: #fff; font: 600 10px/16px var(--sans); text-align: center;
}
.scan-note {
  margin-top: 20px; text-align: center; font-size: 0.8rem; color: var(--muted);
}

/* Sections */
section.block { padding-block: clamp(56px, 8vw, 96px); border-top: 1px solid var(--line); }
.section-head { max-width: 40rem; display: grid; gap: 12px; margin-bottom: 40px; }
.section-head h2 { font-size: var(--step-3); }
.section-head p { color: var(--muted); font-size: var(--step-1); }

.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.feature { background: var(--bg); padding: 28px 24px; display: grid; gap: 8px; align-content: start; }
.feature h3 { font-size: var(--step-1); letter-spacing: -0.01em; }
.feature p { color: var(--muted); font-size: 0.95rem; }
.feature .tag { font: 500 0.78rem/1.4 var(--mono); color: var(--brass); }

/* Privacy facts: a ledger of label / value rows. */
.ledger { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 80px); align-items: start; }
.ledger dl { margin: 0; border-top: 1px solid var(--line); }
.ledger dl div { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.ledger dt { color: var(--muted); font-size: 0.92rem; }
.ledger dd { margin: 0; font-weight: 500; }
.ledger dd small { display: block; font-weight: 400; color: var(--muted); font-size: 0.88rem; }

.cta { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; padding: 32px; background: var(--panel); border: 1px solid var(--line); border-radius: 20px; }
.cta h2 { font-size: var(--step-2); }
.cta p { color: var(--muted); margin-top: 6px; }

/* Long-form pages (privacy, support) */
.doc { padding-block: clamp(40px, 6vw, 72px) clamp(56px, 8vw, 96px); }
.doc header { display: grid; gap: 12px; margin-bottom: 40px; padding-bottom: 32px; border-bottom: 1px solid var(--line); }
.doc h1 { font-size: var(--step-3); }
.doc .meta { color: var(--muted); font-size: 0.92rem; }
.doc h2 { font-size: var(--step-2); margin: 48px 0 14px; scroll-margin-top: 24px; }
.doc h3 { font-size: var(--step-1); margin: 28px 0 8px; }
.doc p, .doc li { color: var(--text); }
.doc p + p { margin-top: 14px; }
.doc ul, .doc ol { padding-left: 1.3em; margin: 12px 0 0; display: grid; gap: 8px; }
.doc .summary { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 20px 24px; }
.doc .summary ul { margin: 0; }
.table-scroll { overflow-x: auto; margin-top: 14px; border: 1px solid var(--line); border-radius: 12px; }
.doc table { width: 100%; border-collapse: collapse; font-size: 0.95rem; min-width: 30rem; }
.doc th, .doc td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { font-weight: 500; color: var(--muted); font-size: 0.85rem; background: var(--panel); }
.doc tr:last-child td { border-bottom: 0; }
.doc .toc { display: flex; flex-wrap: wrap; gap: 8px; }
.doc .toc a { font-size: 0.88rem; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--text); text-decoration: none; }
.doc .toc a:hover { background: var(--raised); }
.doc details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.doc details:first-of-type { border-top: 1px solid var(--line); }
.doc summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.doc summary::-webkit-details-marker { display: none; }
.doc summary::after { content: "+"; font-family: var(--mono); color: var(--brass); }
.doc details[open] summary::after { content: "–"; }
.doc details > :not(summary) { margin-top: 10px; color: var(--muted); }
.kbd { font-family: var(--mono); font-size: 0.9em; padding: 1px 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); white-space: nowrap; }

.contact-card { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); margin-top: 16px; }
.contact-card .mono { font-size: 1rem; word-break: break-all; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px 32px; flex-wrap: wrap; padding-block: 28px; }
.site-footer nav { display: flex; gap: 20px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); }

/* 404 */
.notfound { min-height: 60vh; display: grid; place-content: center; text-align: center; gap: 16px; padding-block: 64px; }
.notfound .code { font: 500 0.9rem/1 var(--mono); color: var(--brass); letter-spacing: 0.1em; }

@media (max-width: 860px) {
  .hero .wrap, .ledger { grid-template-columns: minmax(0, 1fr); }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .receipt-stage { order: 2; }
}
@media (max-width: 560px) {
  .features { grid-template-columns: minmax(0, 1fr); }
  .ledger dl div { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .cta { padding: 24px; }
  .nav { gap: 16px; }
}
@media (prefers-reduced-motion: no-preference) {
  .receipt { animation: settle 700ms cubic-bezier(.2,.7,.2,1) both; }
  .receipt .read::after { animation: tick 300ms ease-out both; animation-delay: calc(500ms + var(--i, 0) * 140ms); }
  @keyframes settle { from { transform: translateY(10px) rotate(-4deg); } to { transform: rotate(-2deg); } }
  @keyframes tick { from { transform: scale(0.4); } to { transform: scale(1); } }
}